src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006-2008  Florian Forster (Mach code)
   5  * Copyright (C) 2008  Oleg King
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the
   9  * Free Software Foundation; either version 2 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  20  *
  21  * Authors:
  22  *   Lyonel Vincent <lyonel at ezix.org>
  23  *   Florian octo Forster <octo at verplant.org>
  24  *   Oleg King <king2 at kaluga.ru>
  25  **/
  26
  27 #include "collectd.h"
  28 #include "common.h"
  29 #include "plugin.h"
  30 #include "configfile.h"
  31
  32 /* Include header files for the mach system, if they exist.. */
  33 #if HAVE_THREAD_INFO
  34 #  if HAVE_MACH_MACH_INIT_H
  35 #    include <mach/mach_init.h>
  36 #  endif
  37 #  if HAVE_MACH_HOST_PRIV_H
  38 #    include <mach/host_priv.h>
  39 #  endif
  40 #  if HAVE_MACH_MACH_ERROR_H
  41 #    include <mach/mach_error.h>
  42 #  endif
  43 #  if HAVE_MACH_MACH_HOST_H
  44 #    include <mach/mach_host.h>
  45 #  endif
  46 #  if HAVE_MACH_MACH_PORT_H
  47 #    include <mach/mach_port.h>
  48 #  endif
  49 #  if HAVE_MACH_MACH_TYPES_H
  50 #    include <mach/mach_types.h>
  51 #  endif
  52 #  if HAVE_MACH_MESSAGE_H
  53 #    include <mach/message.h>
  54 #  endif
  55 #  if HAVE_MACH_PROCESSOR_SET_H
  56 #    include <mach/processor_set.h>
  57 #  endif
  58 #  if HAVE_MACH_TASK_H
  59 #    include <mach/task.h>
  60 #  endif
  61 #  if HAVE_MACH_THREAD_ACT_H
  62 #    include <mach/thread_act.h>
  63 #  endif
  64 #  if HAVE_MACH_VM_REGION_H
  65 #    include <mach/vm_region.h>
  66 #  endif
  67 #  if HAVE_MACH_VM_MAP_H
  68 #    include <mach/vm_map.h>
  69 #  endif
  70 #  if HAVE_MACH_VM_PROT_H
  71 #    include <mach/vm_prot.h>
  72 #  endif
  73 #  if HAVE_SYS_SYSCTL_H
  74 #    include <sys/sysctl.h>
  75 #  endif
  76 /* #endif HAVE_THREAD_INFO */
  77
  78 #elif KERNEL_LINUX
  79 #  if HAVE_LINUX_CONFIG_H
  80 #    include <linux/config.h>
  81 #  endif
  82 #  ifndef CONFIG_HZ
  83 #    define CONFIG_HZ 100
  84 #  endif
  85 /* #endif KERNEL_LINUX */
  86
  87 #elif HAVE_KVM_H
  88 #  include <kvm.h>
  89 #  include <sys/user.h>
  90 #  include <sys/proc.h>
  91 #  if HAVE_SYS_SYSCTL_H
  92 #    include <sys/sysctl.h>
  93 #  endif
  94 /* #endif HAVE_KVM_H */
  95
  96 #else
  97 # error "No applicable input method."
  98 #endif
  99
 100 #if HAVE_REGEX_H
 101 # include <regex.h>
 102 #endif
 103
 104 #define BUFSIZE 256
 105
 106 static const char *config_keys[] =
 107 {
 108         "Process",
 109         "ProcessMatch",
 110         NULL
 111 };
 112 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
 113
 114 typedef struct procstat_entry_s
 115 {
 116         unsigned long id;
 117         unsigned long age;
 118
 119         unsigned long num_proc;
 120         unsigned long num_lwp;
 121         unsigned long vmem_rss;
 122
 123         unsigned long vmem_minflt;
 124         unsigned long vmem_majflt;
 125         unsigned long vmem_minflt_counter;
 126         unsigned long vmem_majflt_counter;
 127
 128         unsigned long cpu_user;
 129         unsigned long cpu_system;
 130         unsigned long cpu_user_counter;
 131         unsigned long cpu_system_counter;
 132
 133         struct procstat_entry_s *next;
 134 } procstat_entry_t;
 135
 136 #define PROCSTAT_NAME_LEN 256
 137 typedef struct procstat
 138 {
 139         char          name[PROCSTAT_NAME_LEN];
 140 #if HAVE_REGEX_H
 141         regex_t *re;
 142 #endif
 143
 144         unsigned long num_proc;
 145         unsigned long num_lwp;
 146         unsigned long vmem_rss;
 147
 148         unsigned long vmem_minflt_counter;
 149         unsigned long vmem_majflt_counter;
 150
 151         unsigned long cpu_user_counter;
 152         unsigned long cpu_system_counter;
 153
 154         struct procstat   *next;
 155         struct procstat_entry_s *instances;
 156 } procstat_t;
 157
 158 static procstat_t *list_head_g = NULL;
 159
 160 #if HAVE_THREAD_INFO
 161 static mach_port_t port_host_self;
 162 static mach_port_t port_task_self;
 163
 164 static processor_set_name_array_t pset_list;
 165 static mach_msg_type_number_t     pset_list_len;
 166 /* #endif HAVE_THREAD_INFO */
 167
 168 #elif KERNEL_LINUX
 169 static long pagesize_g;
 170 #endif /* KERNEL_LINUX */
 171
 172 /* put name of process from config to list_head_g tree
 173    list_head_g is a list of 'procstat_t' structs with
 174    processes names we want to watch */
 175 static void ps_list_register (const char *name, const char *regexp)
 176 {
 177         procstat_t *new;
 178         procstat_t *ptr;
 179         int status;
 180
 181         new = (procstat_t *) malloc (sizeof (procstat_t));
 182         if (new == NULL)
 183         {
 184                 ERROR ("processes plugin: ps_list_register: malloc failed.");
 185                 return;
 186         }
 187         memset (new, 0, sizeof (procstat_t));
 188         sstrncpy (new->name, name, sizeof (new->name));
 189
 190 #if HAVE_REGEX_H
 191         if (regexp != NULL)
 192         {
 193                 DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
 194                 new->re = (regex_t *) malloc (sizeof (regex_t));
 195                 if (new->re == NULL)
 196                 {
 197                         ERROR ("processes plugin: ps_list_register: malloc failed.");
 198                         sfree (new);
 199                         return;
 200                 }
 201
 202                 status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
 203                 if (status != 0)
 204                 {
 205                         DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
 206                         sfree(new->re);
 207                         return;
 208                 }
 209         }
 210 #else
 211         if (regexp != NULL)
 212         {
 213                 ERROR ("processes plugin: ps_list_register: "
 214                                 "Regular expression \"%s\" found in config "
 215                                 "file, but support for regular expressions "
 216                                 "has been dispabled at compile time.",
 217                                 regexp);
 218                 sfree (new);
 219                 return;
 220         }
 221 #endif
 222
 223         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 224         {
 225                 if (strcmp (ptr->name, name) == 0)
 226                 {
 227                         WARNING ("processes plugin: You have configured more "
 228                                         "than one `Process' or "
 229                                         "`ProcessMatch' with the same name. "
 230                                         "All but the first setting will be "
 231                                         "ignored.");
 232                         sfree (new->re);
 233                         sfree (new);
 234                         return;
 235                 }
 236
 237                 if (ptr->next == NULL)
 238                         break;
 239         }
 240
 241         if (ptr == NULL)
 242                 list_head_g = new;
 243         else
 244                 ptr->next = new;
 245 } /* void ps_list_register */
 246
 247 /* try to match name against entry, returns 1 if success */
 248 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
 249 {
 250         if ((ps->re != NULL) && (regexec(ps->re, (strlen(cmdline)!=0)?cmdline:name, 0, NULL, 0) == 0))
 251                 return (1);
 252         if (strcmp (ps->name, name) == 0) {
 253                 return (1);
 254         }
 255         return (0);
 256 }
 257
 258 /* add process entry to 'instances' of process 'name' (or refresh it) */
 259 static void ps_list_add (const char *name, const char *cmdline, procstat_entry_t *entry)
 260 {
 261         procstat_t *ps;
 262         procstat_entry_t *pse;
 263
 264         if (entry->id == 0)
 265                 return;
 266
 267         for (ps = list_head_g; ps != NULL; ps = ps->next)
 268         {
 269
 270                 if ((ps_list_match (name, cmdline, ps)) == 0)
 271                         continue;
 272
 273                 for (pse = ps->instances; pse != NULL; pse = pse->next)
 274                         if ((pse->id == entry->id) || (pse->next == NULL))
 275                                 break;
 276
 277                 if ((pse == NULL) || (pse->id != entry->id))
 278                 {
 279                         procstat_entry_t *new;
 280
 281                         new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 282                         if (new == NULL)
 283                                 return;
 284                         memset (new, 0, sizeof (procstat_entry_t));
 285                         new->id = entry->id;
 286
 287                         if (pse == NULL)
 288                                 ps->instances = new;
 289                         else
 290                                 pse->next = new;
 291
 292                         pse = new;
 293                 }
 294
 295                 pse->age = 0;
 296                 pse->num_proc = entry->num_proc;
 297                 pse->num_lwp  = entry->num_lwp;
 298                 pse->vmem_rss = entry->vmem_rss;
 299
 300                 ps->num_proc += pse->num_proc;
 301                 ps->num_lwp  += pse->num_lwp;
 302                 ps->vmem_rss += pse->vmem_rss;
 303
 304                 if ((entry->vmem_minflt_counter == 0)
 305                                 && (entry->vmem_majflt_counter == 0))
 306                 {
 307                         pse->vmem_minflt_counter += entry->vmem_minflt;
 308                         pse->vmem_minflt = entry->vmem_minflt;
 309
 310                         pse->vmem_majflt_counter += entry->vmem_majflt;
 311                         pse->vmem_majflt = entry->vmem_majflt;
 312                 }
 313                 else
 314                 {
 315                         if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 316                         {
 317                                 pse->vmem_minflt = entry->vmem_minflt_counter
 318                                         + (ULONG_MAX - pse->vmem_minflt_counter);
 319                         }
 320                         else
 321                         {
 322                                 pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 323                         }
 324                         pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 325
 326                         if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 327                         {
 328                                 pse->vmem_majflt = entry->vmem_majflt_counter
 329                                         + (ULONG_MAX - pse->vmem_majflt_counter);
 330                         }
 331                         else
 332                         {
 333                                 pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 334                         }
 335                         pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 336                 }
 337
 338                 ps->vmem_minflt_counter += pse->vmem_minflt;
 339                 ps->vmem_majflt_counter += pse->vmem_majflt;
 340
 341                 if ((entry->cpu_user_counter == 0)
 342                                 && (entry->cpu_system_counter == 0))
 343                 {
 344                         pse->cpu_user_counter += entry->cpu_user;
 345                         pse->cpu_user = entry->cpu_user;
 346
 347                         pse->cpu_system_counter += entry->cpu_system;
 348                         pse->cpu_system = entry->cpu_system;
 349                 }
 350                 else
 351                 {
 352                         if (entry->cpu_user_counter < pse->cpu_user_counter)
 353                         {
 354                                 pse->cpu_user = entry->cpu_user_counter
 355                                         + (ULONG_MAX - pse->cpu_user_counter);
 356                         }
 357                         else
 358                         {
 359                                 pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 360                         }
 361                         pse->cpu_user_counter = entry->cpu_user_counter;
 362
 363                         if (entry->cpu_system_counter < pse->cpu_system_counter)
 364                         {
 365                                 pse->cpu_system = entry->cpu_system_counter
 366                                         + (ULONG_MAX - pse->cpu_system_counter);
 367                         }
 368                         else
 369                         {
 370                                 pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 371                         }
 372                         pse->cpu_system_counter = entry->cpu_system_counter;
 373                 }
 374
 375                 ps->cpu_user_counter   += pse->cpu_user;
 376                 ps->cpu_system_counter += pse->cpu_system;
 377         }
 378 }
 379
 380 /* remove old entries from instances of processes in list_head_g */
 381 static void ps_list_reset (void)
 382 {
 383         procstat_t *ps;
 384         procstat_entry_t *pse;
 385         procstat_entry_t *pse_prev;
 386
 387         for (ps = list_head_g; ps != NULL; ps = ps->next)
 388         {
 389                 ps->num_proc    = 0;
 390                 ps->num_lwp     = 0;
 391                 ps->vmem_rss    = 0;
 392
 393                 pse_prev = NULL;
 394                 pse = ps->instances;
 395                 while (pse != NULL)
 396                 {
 397                         if (pse->age > 10)
 398                         {
 399                                 DEBUG ("Removing this procstat entry cause it's too old: "
 400                                                 "id = %lu; name = %s;",
 401                                                 pse->id, ps->name);
 402
 403                                 if (pse_prev == NULL)
 404                                 {
 405                                         ps->instances = pse->next;
 406                                         free (pse);
 407                                         pse = ps->instances;
 408                                 }
 409                                 else
 410                                 {
 411                                         pse_prev->next = pse->next;
 412                                         free (pse);
 413                                         pse = pse_prev->next;
 414                                 }
 415                         }
 416                         else
 417                         {
 418                                 pse->age++;
 419                                 pse_prev = pse;
 420                                 pse = pse->next;
 421                         }
 422                 } /* while (pse != NULL) */
 423         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 424 }
 425
 426 /* put all pre-defined 'Process' names from config to list_head_g tree */
 427 static int ps_config (const char *key, const char *value)
 428 {
 429         char *new_val;
 430         char *fields[2];
 431         int fields_num;
 432
 433         if (strcasecmp (key, "Process") == 0)
 434         {
 435                 ps_list_register (value, NULL);
 436                 return (0);
 437         }
 438
 439         if (strcasecmp (key, "ProcessMatch") == 0)
 440         {
 441                 new_val = strdup (value);
 442                 if (new_val == NULL)
 443                         return (-1);
 444                 fields_num = strsplit (new_val, fields, 2);
 445                 if (fields_num != 2)
 446                 {
 447                         sfree (new_val);
 448                         return (-1);
 449                 }
 450                 ps_list_register (fields[0], fields[1]);
 451                 sfree (new_val);
 452                 return (0);
 453         }
 454
 455         return (-1);
 456 }
 457
 458 static int ps_init (void)
 459 {
 460 #if HAVE_THREAD_INFO
 461         kern_return_t status;
 462
 463         port_host_self = mach_host_self ();
 464         port_task_self = mach_task_self ();
 465
 466         if (pset_list != NULL)
 467         {
 468                 vm_deallocate (port_task_self,
 469                                 (vm_address_t) pset_list,
 470                                 pset_list_len * sizeof (processor_set_t));
 471                 pset_list = NULL;
 472                 pset_list_len = 0;
 473         }
 474
 475         if ((status = host_processor_sets (port_host_self,
 476                                         &pset_list,
 477                                         &pset_list_len)) != KERN_SUCCESS)
 478         {
 479                 ERROR ("host_processor_sets failed: %s\n",
 480                                 mach_error_string (status));
 481                 pset_list = NULL;
 482                 pset_list_len = 0;
 483                 return (-1);
 484         }
 485 /* #endif HAVE_THREAD_INFO */
 486
 487 #elif KERNEL_LINUX
 488         pagesize_g = sysconf(_SC_PAGESIZE);
 489         DEBUG ("pagesize_g = %li; CONFIG_HZ = %i;",
 490                         pagesize_g, CONFIG_HZ);
 491 #endif /* KERNEL_LINUX */
 492
 493         return (0);
 494 } /* int ps_init */
 495
 496 /* submit global state (e.g.: qty of zombies, running, etc..) */
 497 static void ps_submit_state (const char *state, double value)
 498 {
 499         value_t values[1];
 500         value_list_t vl = VALUE_LIST_INIT;
 501
 502         values[0].gauge = value;
 503
 504         vl.values = values;
 505         vl.values_len = 1;
 506         vl.time = time (NULL);
 507         strcpy (vl.host, hostname_g);
 508         strcpy (vl.plugin, "processes");
 509         strcpy (vl.plugin_instance, "");
 510         strcpy (vl.type, "ps_state");
 511         sstrncpy (vl.type_instance, state, sizeof (vl.type_instance));
 512
 513         plugin_dispatch_values (&vl);
 514 }
 515
 516 /* submit info about specific process (e.g.: memory taken, cpu usage, etc..) */
 517 static void ps_submit_proc_list (procstat_t *ps)
 518 {
 519         value_t values[2];
 520         value_list_t vl = VALUE_LIST_INIT;
 521
 522         vl.values = values;
 523         vl.values_len = 2;
 524         vl.time = time (NULL);
 525         strcpy (vl.host, hostname_g);
 526         strcpy (vl.plugin, "processes");
 527         sstrncpy (vl.plugin_instance, ps->name, sizeof (vl.plugin_instance));
 528
 529         strcpy (vl.type, "ps_rss");
 530         vl.values[0].gauge = ps->vmem_rss;
 531         vl.values_len = 1;
 532         plugin_dispatch_values (&vl);
 533
 534         strcpy (vl.type, "ps_cputime");
 535         vl.values[0].counter = ps->cpu_user_counter;
 536         vl.values[1].counter = ps->cpu_system_counter;
 537         vl.values_len = 2;
 538         plugin_dispatch_values (&vl);
 539
 540         strcpy (vl.type, "ps_count");
 541         vl.values[0].gauge = ps->num_proc;
 542         vl.values[1].gauge = ps->num_lwp;
 543         vl.values_len = 2;
 544         plugin_dispatch_values (&vl);
 545
 546         strcpy (vl.type, "ps_pagefaults");
 547         vl.values[0].counter = ps->vmem_minflt_counter;
 548         vl.values[1].counter = ps->vmem_majflt_counter;
 549         vl.values_len = 2;
 550         plugin_dispatch_values (&vl);
 551
 552         DEBUG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 553                         "vmem_minflt_counter = %lu; vmem_majflt_counter = %lu; "
 554                         "cpu_user_counter = %lu; cpu_system_counter = %lu;",
 555                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 556                         ps->vmem_minflt_counter, ps->vmem_majflt_counter,
 557                         ps->cpu_user_counter, ps->cpu_system_counter);
 558 } /* void ps_submit_proc_list */
 559
 560 /* ------- additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 561 #if KERNEL_LINUX
 562 static int *ps_read_tasks (int pid)
 563 {
 564         int *list = NULL;
 565         int  list_size = 1; /* size of allocated space, in elements */
 566         int  list_len = 0;  /* number of currently used elements */
 567
 568         char           dirname[64];
 569         DIR           *dh;
 570         struct dirent *ent;
 571
 572         ssnprintf (dirname, sizeof (dirname), "/proc/%i/task", pid);
 573
 574         if ((dh = opendir (dirname)) == NULL)
 575         {
 576                 DEBUG ("Failed to open directory `%s'", dirname);
 577                 return (NULL);
 578         }
 579
 580         while ((ent = readdir (dh)) != NULL)
 581         {
 582                 if (!isdigit (ent->d_name[0]))
 583                         continue;
 584
 585                 if ((list_len + 1) >= list_size)
 586                 {
 587                         int *new_ptr;
 588                         int  new_size = 2 * list_size;
 589                         /* Comes in sizes: 2, 4, 8, 16, ... */
 590
 591                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 592                         if (new_ptr == NULL)
 593                         {
 594                                 if (list != NULL)
 595                                         free (list);
 596                                 ERROR ("processes plugin: "
 597                                                 "Failed to allocate more memory.");
 598                                 return (NULL);
 599                         }
 600
 601                         list = new_ptr;
 602                         list_size = new_size;
 603
 604                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 605                 }
 606
 607                 list[list_len] = atoi (ent->d_name);
 608                 if (list[list_len] != 0)
 609                         list_len++;
 610         }
 611
 612         closedir (dh);
 613
 614         if (list_len == 0)
 615                 return (NULL);
 616
 617         assert (list_len < list_size);
 618         assert (list[list_len] == 0);
 619
 620         return (list);
 621 } /* int *ps_read_tasks */
 622
 623 int ps_read_process (int pid, procstat_t *ps, char *state)
 624 {
 625         char  filename[64];
 626         char  buffer[1024];
 627         FILE *fh;
 628
 629         char *fields[64];
 630         char  fields_len;
 631
 632         int  *tasks;
 633         int   i;
 634
 635         int   ppid;
 636         int   name_len;
 637
 638         long long unsigned cpu_user_counter;
 639         long long unsigned cpu_system_counter;
 640         long long unsigned vmem_rss;
 641
 642         memset (ps, 0, sizeof (procstat_t));
 643
 644         ssnprintf (filename, sizeof (filename), "/proc/%i/stat", pid);
 645
 646         if ((fh = fopen (filename, "r")) == NULL)
 647                 return (-1);
 648
 649         if (fgets (buffer, 1024, fh) == NULL)
 650         {
 651                 fclose (fh);
 652                 return (-1);
 653         }
 654
 655         fclose (fh);
 656
 657         fields_len = strsplit (buffer, fields, 64);
 658         if (fields_len < 24)
 659         {
 660                 DEBUG ("processes plugin: ps_read_process (pid = %i):"
 661                                 " `%s' has only %i fields..",
 662                                 (int) pid, filename, fields_len);
 663                 return (-1);
 664         }
 665
 666         /* copy the name, strip brackets in the process */
 667         name_len = strlen (fields[1]) - 2;
 668         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 669         {
 670                 DEBUG ("No brackets found in process name: `%s'", fields[1]);
 671                 return (-1);
 672         }
 673         fields[1] = fields[1] + 1;
 674         fields[1][name_len] = '\0';
 675         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 676
 677         ppid = atoi (fields[3]);
 678
 679         *state = fields[2][0];
 680
 681         if (*state == 'Z')
 682         {
 683                 ps->num_lwp  = 0;
 684                 ps->num_proc = 0;
 685         }
 686         else if ((tasks = ps_read_tasks (pid)) == NULL)
 687         {
 688                 /* Kernel 2.4 or so */
 689                 ps->num_lwp  = 1;
 690                 ps->num_proc = 1;
 691         }
 692         else
 693         {
 694                 ps->num_lwp  = 0;
 695                 ps->num_proc = 1;
 696                 for (i = 0; tasks[i] != 0; i++)
 697                         ps->num_lwp++;
 698
 699                 free (tasks);
 700                 tasks = NULL;
 701         }
 702
 703         /* Leave the rest at zero if this is only a zombi */
 704         if (ps->num_proc == 0)
 705         {
 706                 DEBUG ("processes plugin: This is only a zombi: pid = %i; "
 707                                 "name = %s;", pid, ps->name);
 708                 return (0);
 709         }
 710
 711         cpu_user_counter   = atoll (fields[13]);
 712         cpu_system_counter = atoll (fields[14]);
 713         vmem_rss = atoll (fields[23]);
 714         ps->vmem_minflt_counter = atol (fields[9]);
 715         ps->vmem_majflt_counter = atol (fields[11]);
 716
 717         /* Convert jiffies to useconds */
 718         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 719         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 720         vmem_rss = vmem_rss * pagesize_g;
 721
 722         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 723         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 724         ps->vmem_rss = (unsigned long) vmem_rss;
 725
 726         /* success */
 727         return (0);
 728 } /* int ps_read_process (...) */
 729 #endif /* KERNEL_LINUX */
 730
 731 #if HAVE_THREAD_INFO
 732 static int mach_get_task_name (task_t t, int *pid, char *name, size_t name_max_len)
 733 {
 734         int mib[4];
 735
 736         struct kinfo_proc kp;
 737         size_t            kp_size;
 738
 739         mib[0] = CTL_KERN;
 740         mib[1] = KERN_PROC;
 741         mib[2] = KERN_PROC_PID;
 742
 743         if (pid_for_task (t, pid) != KERN_SUCCESS)
 744                 return (-1);
 745         mib[3] = *pid;
 746
 747         kp_size = sizeof (kp);
 748         if (sysctl (mib, 4, &kp, &kp_size, NULL, 0) != 0)
 749                 return (-1);
 750
 751         if (name_max_len > (MAXCOMLEN + 1))
 752                 name_max_len = MAXCOMLEN + 1;
 753
 754         strncpy (name, kp.kp_proc.p_comm, name_max_len - 1);
 755         name[name_max_len - 1] = '\0';
 756
 757         DEBUG ("pid = %i; name = %s;", *pid, name);
 758
 759         /* We don't do the special handling for `p_comm == "LaunchCFMApp"' as
 760          * `top' does it, because it is a lot of work and only used when
 761          * debugging. -octo */
 762
 763         return (0);
 764 }
 765 #endif /* HAVE_THREAD_INFO */
 766 /* ------- end of additional functions for KERNEL_LINUX/HAVE_THREAD_INFO ------- */
 767
 768 /* do actual readings from kernel */
 769 static int ps_read (void)
 770 {
 771 #if HAVE_THREAD_INFO
 772         kern_return_t            status;
 773
 774         int                      pset;
 775         processor_set_t          port_pset_priv;
 776
 777         int                      task;
 778         task_array_t             task_list;
 779         mach_msg_type_number_t   task_list_len;
 780
 781         int                      task_pid;
 782         char                     task_name[MAXCOMLEN + 1];
 783
 784         int                      thread;
 785         thread_act_array_t       thread_list;
 786         mach_msg_type_number_t   thread_list_len;
 787         thread_basic_info_data_t thread_data;
 788         mach_msg_type_number_t   thread_data_len;
 789
 790         int running  = 0;
 791         int sleeping = 0;
 792         int zombies  = 0;
 793         int stopped  = 0;
 794         int blocked  = 0;
 795
 796         procstat_t *ps;
 797         procstat_entry_t pse;
 798
 799         ps_list_reset ();
 800
 801         /*
 802          * The Mach-concept is a little different from the traditional UNIX
 803          * concept: All the work is done in threads. Threads are contained in
 804          * `tasks'. Therefore, `task status' doesn't make much sense, since
 805          * it's actually a `thread status'.
 806          * Tasks are assigned to sets of processors, so that's where you go to
 807          * get a list.
 808          */
 809         for (pset = 0; pset < pset_list_len; pset++)
 810         {
 811                 if ((status = host_processor_set_priv (port_host_self,
 812                                                 pset_list[pset],
 813                                                 &port_pset_priv)) != KERN_SUCCESS)
 814                 {
 815                         ERROR ("host_processor_set_priv failed: %s\n",
 816                                         mach_error_string (status));
 817                         continue;
 818                 }
 819
 820                 if ((status = processor_set_tasks (port_pset_priv,
 821                                                 &task_list,
 822                                                 &task_list_len)) != KERN_SUCCESS)
 823                 {
 824                         ERROR ("processor_set_tasks failed: %s\n",
 825                                         mach_error_string (status));
 826                         mach_port_deallocate (port_task_self, port_pset_priv);
 827                         continue;
 828                 }
 829
 830                 for (task = 0; task < task_list_len; task++)
 831                 {
 832                         ps = NULL;
 833                         if (mach_get_task_name (task_list[task],
 834                                                 &task_pid,
 835                                                 task_name, PROCSTAT_NAME_LEN) == 0)
 836                         {
 837                                 /* search for at least one match */
 838                                 for (ps = list_head_g; ps != NULL; ps = ps->next)
 839                                         if (ps_list_match(task_name, NULL, ps) == 1) //!!! cmdline should be here instead of NULL
 840                                                 break;
 841                         }
 842
 843                         /* Collect more detailed statistics for this process */
 844                         if (ps != NULL)
 845                         {
 846                                 task_basic_info_data_t        task_basic_info;
 847                                 mach_msg_type_number_t        task_basic_info_len;
 848                                 task_events_info_data_t       task_events_info;
 849                                 mach_msg_type_number_t        task_events_info_len;
 850                                 task_absolutetime_info_data_t task_absolutetime_info;
 851                                 mach_msg_type_number_t        task_absolutetime_info_len;
 852
 853                                 memset (&pse, '\0', sizeof (pse));
 854                                 pse.id = task_pid;
 855
 856                                 task_basic_info_len = TASK_BASIC_INFO_COUNT;
 857                                 status = task_info (task_list[task],
 858                                                 TASK_BASIC_INFO,
 859                                                 (task_info_t) &task_basic_info,
 860                                                 &task_basic_info_len);
 861                                 if (status != KERN_SUCCESS)
 862                                 {
 863                                         ERROR ("task_info failed: %s",
 864                                                         mach_error_string (status));
 865                                         continue; /* with next thread_list */
 866                                 }
 867
 868                                 task_events_info_len = TASK_EVENTS_INFO_COUNT;
 869                                 status = task_info (task_list[task],
 870                                                 TASK_EVENTS_INFO,
 871                                                 (task_info_t) &task_events_info,
 872                                                 &task_events_info_len);
 873                                 if (status != KERN_SUCCESS)
 874                                 {
 875                                         ERROR ("task_info failed: %s",
 876                                                         mach_error_string (status));
 877                                         continue; /* with next thread_list */
 878                                 }
 879
 880                                 task_absolutetime_info_len = TASK_ABSOLUTETIME_INFO_COUNT;
 881                                 status = task_info (task_list[task],
 882                                                 TASK_ABSOLUTETIME_INFO,
 883                                                 (task_info_t) &task_absolutetime_info,
 884                                                 &task_absolutetime_info_len);
 885                                 if (status != KERN_SUCCESS)
 886                                 {
 887                                         ERROR ("task_info failed: %s",
 888                                                         mach_error_string (status));
 889                                         continue; /* with next thread_list */
 890                                 }
 891
 892                                 pse.num_proc++;
 893                                 pse.vmem_rss = task_basic_info.resident_size;
 894
 895                                 pse.vmem_minflt_counter = task_events_info.cow_faults;
 896                                 pse.vmem_majflt_counter = task_events_info.faults;
 897
 898                                 pse.cpu_user_counter = task_absolutetime_info.total_user;
 899                                 pse.cpu_system_counter = task_absolutetime_info.total_system;
 900                         }
 901
 902                         status = task_threads (task_list[task], &thread_list,
 903                                         &thread_list_len);
 904                         if (status != KERN_SUCCESS)
 905                         {
 906                                 /* Apple's `top' treats this case a zombie. It
 907                                  * makes sense to some extend: A `zombie'
 908                                  * thread is nonsense, since the task/process
 909                                  * is dead. */
 910                                 zombies++;
 911                                 DEBUG ("task_threads failed: %s",
 912                                                 mach_error_string (status));
 913                                 if (task_list[task] != port_task_self)
 914                                         mach_port_deallocate (port_task_self,
 915                                                         task_list[task]);
 916                                 continue; /* with next task_list */
 917                         }
 918
 919                         for (thread = 0; thread < thread_list_len; thread++)
 920                         {
 921                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 922                                 status = thread_info (thread_list[thread],
 923                                                 THREAD_BASIC_INFO,
 924                                                 (thread_info_t) &thread_data,
 925                                                 &thread_data_len);
 926                                 if (status != KERN_SUCCESS)
 927                                 {
 928                                         ERROR ("thread_info failed: %s",
 929                                                         mach_error_string (status));
 930                                         if (task_list[task] != port_task_self)
 931                                                 mach_port_deallocate (port_task_self,
 932                                                                 thread_list[thread]);
 933                                         continue; /* with next thread_list */
 934                                 }
 935
 936                                 if (ps != NULL)
 937                                         pse.num_lwp++;
 938
 939                                 switch (thread_data.run_state)
 940                                 {
 941                                         case TH_STATE_RUNNING:
 942                                                 running++;
 943                                                 break;
 944                                         case TH_STATE_STOPPED:
 945                                         /* What exactly is `halted'? */
 946                                         case TH_STATE_HALTED:
 947                                                 stopped++;
 948                                                 break;
 949                                         case TH_STATE_WAITING:
 950                                                 sleeping++;
 951                                                 break;
 952                                         case TH_STATE_UNINTERRUPTIBLE:
 953                                                 blocked++;
 954                                                 break;
 955                                         /* There is no `zombie' case here,
 956                                          * since there are no zombie-threads.
 957                                          * There's only zombie tasks, which are
 958                                          * handled above. */
 959                                         default:
 960                                                 WARNING ("Unknown thread status: %s",
 961                                                                 thread_data.run_state);
 962                                                 break;
 963                                 } /* switch (thread_data.run_state) */
 964
 965                                 if (task_list[task] != port_task_self)
 966                                 {
 967                                         status = mach_port_deallocate (port_task_self,
 968                                                         thread_list[thread]);
 969                                         if (status != KERN_SUCCESS)
 970                                                 ERROR ("mach_port_deallocate failed: %s",
 971                                                                 mach_error_string (status));
 972                                 }
 973                         } /* for (thread_list) */
 974
 975                         if ((status = vm_deallocate (port_task_self,
 976                                                         (vm_address_t) thread_list,
 977                                                         thread_list_len * sizeof (thread_act_t)))
 978                                         != KERN_SUCCESS)
 979                         {
 980                                 ERROR ("vm_deallocate failed: %s",
 981                                                 mach_error_string (status));
 982                         }
 983                         thread_list = NULL;
 984                         thread_list_len = 0;
 985
 986                         /* Only deallocate the task port, if it isn't our own.
 987                          * Don't know what would happen in that case, but this
 988                          * is what Apple's top does.. ;) */
 989                         if (task_list[task] != port_task_self)
 990                         {
 991                                 status = mach_port_deallocate (port_task_self,
 992                                                 task_list[task]);
 993                                 if (status != KERN_SUCCESS)
 994                                         ERROR ("mach_port_deallocate failed: %s",
 995                                                         mach_error_string (status));
 996                         }
 997
 998                         if (ps != NULL)
 999                                 ps_list_add (task_name, NULL, &pse); //!!! cmdline should be here instead of NULL
1000                 } /* for (task_list) */
1001
1002                 if ((status = vm_deallocate (port_task_self,
1003                                 (vm_address_t) task_list,
1004                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
1005                 {
1006                         ERROR ("vm_deallocate failed: %s",
1007                                         mach_error_string (status));
1008                 }
1009                 task_list = NULL;
1010                 task_list_len = 0;
1011
1012                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
1013                                 != KERN_SUCCESS)
1014                 {
1015                         ERROR ("mach_port_deallocate failed: %s",
1016                                         mach_error_string (status));
1017                 }
1018         } /* for (pset_list) */
1019
1020         ps_submit_state ("running", running);
1021         ps_submit_state ("sleeping", sleeping);
1022         ps_submit_state ("zombies", zombies);
1023         ps_submit_state ("stopped", stopped);
1024         ps_submit_state ("blocked", blocked);
1025
1026         for (ps = list_head_g; ps != NULL; ps = ps->next)
1027                 ps_submit_proc_list (ps);
1028 /* #endif HAVE_THREAD_INFO */
1029
1030 #elif KERNEL_LINUX
1031         int running  = 0;
1032         int sleeping = 0;
1033         int zombies  = 0;
1034         int stopped  = 0;
1035         int paging   = 0;
1036         int blocked  = 0;
1037
1038         struct dirent *ent;
1039         DIR           *proc;
1040         int            pid;
1041
1042         int        status;
1043         procstat_t ps;
1044         procstat_entry_t pse;
1045         char       state;
1046
1047         procstat_t *ps_ptr;
1048
1049         running = sleeping = zombies = stopped = paging = blocked = 0;
1050         ps_list_reset ();
1051
1052         if ((proc = opendir ("/proc")) == NULL)
1053         {
1054                 char errbuf[1024];
1055                 ERROR ("Cannot open `/proc': %s",
1056                                 sstrerror (errno, errbuf, sizeof (errbuf)));
1057                 return (-1);
1058         }
1059
1060         while ((ent = readdir (proc)) != NULL)
1061         {
1062                 if (!isdigit (ent->d_name[0]))
1063                         continue;
1064
1065                 if ((pid = atoi (ent->d_name)) < 1)
1066                         continue;
1067
1068                 status = ps_read_process (pid, &ps, &state);
1069                 if (status != 0)
1070                 {
1071                         DEBUG ("ps_read_process failed: %i", status);
1072                         continue;
1073                 }
1074
1075                 pse.id       = pid;
1076                 pse.age      = 0;
1077
1078                 pse.num_proc = ps.num_proc;
1079                 pse.num_lwp  = ps.num_lwp;
1080                 pse.vmem_rss = ps.vmem_rss;
1081
1082                 pse.vmem_minflt = 0;
1083                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
1084                 pse.vmem_majflt = 0;
1085                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
1086
1087                 pse.cpu_user = 0;
1088                 pse.cpu_user_counter = ps.cpu_user_counter;
1089                 pse.cpu_system = 0;
1090                 pse.cpu_system_counter = ps.cpu_system_counter;
1091
1092                 switch (state)
1093                 {
1094                         case 'R': running++;  break;
1095                         case 'S': sleeping++; break;
1096                         case 'D': blocked++;  break;
1097                         case 'Z': zombies++;  break;
1098                         case 'T': stopped++;  break;
1099                         case 'W': paging++;   break;
1100                 }
1101
1102                 ps_list_add (ps.name, NULL, &pse); //!!! cmdline should be here instead of NULL
1103         }
1104
1105         closedir (proc);
1106
1107         ps_submit_state ("running",  running);
1108         ps_submit_state ("sleeping", sleeping);
1109         ps_submit_state ("zombies",  zombies);
1110         ps_submit_state ("stopped",  stopped);
1111         ps_submit_state ("paging",   paging);
1112         ps_submit_state ("blocked",  blocked);
1113
1114         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1115                 ps_submit_proc_list (ps_ptr);
1116 /* #endif KERNEL_LINUX */
1117
1118 #elif HAVE_LIBKVM
1119         int running  = 0;
1120         int sleeping = 0;
1121         int zombies  = 0;
1122         int stopped  = 0;
1123         int blocked  = 0;
1124         int idle     = 0;
1125         int wait     = 0;
1126
1127         kvm_t *kd;
1128         char errbuf[1024];
1129         char cmdline[ARG_MAX];
1130         struct kinfo_proc *procs;          /* array of processes */
1131         char ** argv;
1132         int count;                         /* returns number of processes */
1133         int i, j;
1134
1135         procstat_t *ps_ptr;
1136         procstat_entry_t pse;
1137
1138         ps_list_reset ();
1139
1140         /* Open the kvm interface, get a descriptor */
1141         if ((kd = kvm_open(NULL, NULL, NULL, 0, errbuf)) == NULL) {
1142                 ERROR ("Cannot open kvm interface: %s", errbuf);
1143                 return (0);
1144         }
1145
1146         /* Get the list of processes. */
1147         if ((procs = kvm_getprocs(kd, KERN_PROC_ALL, 0, &count)) == NULL) {
1148                 kvm_close(kd);
1149                 ERROR ("Cannot get kvm processes list: %s", kvm_geterr(kd));
1150                 return (0);
1151         }
1152
1153         /* Iterate through the processes in kinfo_proc */
1154         for (i=0; i < count; i++) {
1155                 // retrieve the arguments
1156                 *cmdline = '\0';
1157                 argv = kvm_getargv(kd, (const struct kinfo_proc *) &(procs[i]), 0);
1158                 if (argv) {
1159                         j = 0;
1160                         while (argv[j] && strlen(cmdline) <= ARG_MAX) {
1161                                 if (j)
1162                                         strncat(cmdline, " ", 1);
1163                                 strncat(cmdline, argv[j], strlen(argv[j]));
1164                                 j++;
1165                         }
1166                 }
1167
1168                 pse.id       = procs[i].ki_pid;
1169                 pse.age      = 0;
1170
1171                 pse.num_proc = 1;
1172                 pse.num_lwp  = procs[i].ki_numthreads;
1173
1174                 pse.vmem_rss = procs[i].ki_rssize * getpagesize();
1175                 pse.vmem_minflt = 0;
1176                 pse.vmem_minflt_counter = procs[i].ki_rusage.ru_minflt;
1177                 pse.vmem_majflt = 0;
1178                 pse.vmem_majflt_counter = procs[i].ki_rusage.ru_majflt;
1179
1180                 pse.cpu_user = 0;
1181                 pse.cpu_user_counter = procs[i].ki_rusage.ru_utime.tv_sec*1000 + procs[i].ki_rusage.ru_utime.tv_usec;
1182                 pse.cpu_system = 0;
1183                 pse.cpu_system_counter = procs[i].ki_rusage.ru_stime.tv_sec*1000 + procs[i].ki_rusage.ru_stime.tv_usec;
1184
1185                 switch (procs[i].ki_stat) {
1186                         case SSTOP:     stopped++;      break;
1187                         case SSLEEP:    sleeping++;     break;
1188                         case SRUN:      running++;      break;
1189                         case SIDL:      idle++;         break;
1190                         case SWAIT:     wait++;         break;
1191                         case SLOCK:     blocked++;      break;
1192                         case SZOMB:     zombies++;      break;
1193                 }
1194
1195                 ps_list_add (procs[i].ki_comm, cmdline, &pse);
1196         }
1197
1198         if (kd) kvm_close(kd);
1199
1200         ps_submit_state ("running",  running);
1201         ps_submit_state ("sleeping", sleeping);
1202         ps_submit_state ("zombies",  zombies);
1203         ps_submit_state ("stopped",  stopped);
1204         ps_submit_state ("blocked",  blocked);
1205         ps_submit_state ("idle",     idle);
1206         ps_submit_state ("wait",     wait);
1207
1208         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1209                 ps_submit_proc_list (ps_ptr);
1210
1211 #endif /* HAVE_LIBKVM */
1212
1213         return (0);
1214 } /* int ps_read */
1215
1216 void module_register (void)
1217 {
1218         plugin_register_config ("processes", ps_config,
1219                         config_keys, config_keys_num);
1220         plugin_register_init ("processes", ps_init);
1221         plugin_register_read ("processes", ps_read);
1222 } /* void module_register */